Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 202-803-3 | CAS number: 99-94-5
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2004
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
- Deviations:
- not specified
- GLP compliance:
- yes
Test material
- Reference substance name:
- p-toluic acid
- EC Number:
- 202-803-3
- EC Name:
- p-toluic acid
- Cas Number:
- 99-94-5
- Molecular formula:
- C8H8O2
- IUPAC Name:
- 4-methylbenzoic acid
- Test material form:
- solid: crystalline
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradationopen allclose all
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- >= 92 - <= 100
- Sampling time:
- 28 d
- Key result
- Parameter:
- % degradation (TOC removal)
- Value:
- >= 98 - <= 99
- Sampling time:
- 28 d
- Key result
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 100 - 100
- Sampling time:
- 28 d
Any other information on results incl. tables
Biodegradability
of Aniline (control substance) after 7 days and 14 days are 66% and 75%
respectively.
No converted products were observed.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable
- Conclusions:
- This study determined that p-toluic acid is readily biodegradable under the conditions observed.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
